SuperAdmins are admins who have all permissions on the system.
They can, among other things:
- change the system configuration,
- attribute values,
- subscribe pages,
There is no limit to the number of SuperAdmins on a system, though you would be well advised to keep the number to something manageable. SuperAdmins can create, edit and remove administrators, and change the admins' permissions, including the permissions of other SuperAdmins.